Richard Pera Mao, 25, of Randleman, was found dead around 12:30 p.m. inside USA Pawn at 2010 Randleman Road. south of West Florida Street. Mao's body was found after the fire was extinguished.

Greensboro fire officials said Friday the official cause of the fire remained undetermined after the investigation wrapped up. However, fire officials did say the fire is being viewed as unintentional.

In a statement, deputy Guilford County fire marshall Todd Lynch said it's not unusual for a fire investigation to end without a cause being determined. ATF, SBI and private investigation firms joined Greensboro police and fire officials in investigating the fire.

The cause of Mao's death hasn't been released. Mao was preparing the business for opening when the fire occurred, police said.

The fire was first reported by passers-by around 8:40 a.m. Monday. Firefighters tried to enter the business when they first got to the scene, but they retreated due to heavy smoke, flames and concerns about the building's structural integrity, Greensboro police said.

The southbound lanes of Randleman Road were closed for hours between West Terrell Street and Lawrence Street as crews battled hot spots.

Anyone with information that can help investigators is being asked to call Crime Stoppers at 336-373-1000 or text the tip to 274637 using the keyword badboyz.